PANews reported on April 17 that, according to CoinDesk, Cardano founder Charles Hoskinson stated that the Bitcoin quantum defense solution BIP-361, proposed by developers Jameson Lopp and others, was incorrectly labeled as a soft fork and requires a hard fork in practice, which conflicts with Bitcoin's culture of resisting hard forks.

He pointed out that the zero-knowledge proof-based recovery mechanism in the proposal cannot protect approximately 1.7 million early Bitcoins (including about 1 million held by Satoshi Nakamoto) because these tokens were created before the introduction of the BIP-39 mnemonic phrase standard in 2013, using the local key pool in the original Bitcoin wallet software instead of a recoverable mnemonic phrase seed, and therefore cannot provide the cryptographic credentials required for zero-knowledge proofs. If the proposal passes in its current form, these early tokens will be permanently frozen. Lopp admitted that he disliked the proposal, calling it a "rough idea for a contingency plan" rather than a final specification. Hoskinson believes that Bitcoin's lack of a formal on-chain governance mechanism makes it impossible to resolve such controversial escalations through a structured process.